tests/test-nullptr.c

   1 /* Test nullptr.
   2    Copyright 2023-2025 Free Software Foundation, Inc.
   3
   4    This program is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation, either version 3 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 /* Written by Bruno Haible.  */
  18
  19 #include <config.h>
  20
  21 int *my_null = nullptr;
  22
  23 #if 0 /* not yet */
  24 /* Header that is supposed to define nullptr_t.  */
  25 # include <stddef.h>
  26 #endif
  27
  28 #include <stdarg.h>
  29
  30 #include "macros.h"
  31
  32 #if 0 /* not yet */
  33
  34 static void
  35 simple_callee (nullptr_t x)
  36 {
  37   ASSERT (x == NULL);
  38 }
  39
  40 #endif
  41
  42 static void
  43 varargs_callee (const char *first, ...)
  44 {
  45   va_list args;
  46   const char *arg;
  47
  48   ASSERT (first[0] == 't');
  49   va_start (args, first);
  50
  51   arg = va_arg (args, const char *);
  52   ASSERT (arg == NULL);
  53
  54   arg = va_arg (args, const char *);
  55   ASSERT (arg[0] == 'f');
  56
  57   arg = va_arg (args, const char *);
  58   ASSERT (arg == NULL);
  59
  60   va_end (args);
  61 }
  62
  63 int
  64 main ()
  65 {
  66   varargs_callee ("type", nullptr, "foo", nullptr);
  67
  68   return test_exit_status;
  69 }